UFTP is a multicast file transfer program, utilizing a protocol based on
Starburst MFTP. It is designed to reliably and efficiently transfer files
to multiple receivers simultaneously, where either the intended receivers
can be specified beforehand, or receivers can join the transfer when it is
initiated. This is useful for distributing large files to a large number of
receivers, and is especially useful for data distribution over a satellite
link (with two way communication), where the inherent delay makes any TCP
based communication terribly inefficient. UFTP has been used in the production
process of The Wall Street Journal to send WSJ pages over satellite to their
remote printing plants.